//
// (C) Copyright 2009 Irantha Suwandarathna (irantha@gmail.com)
// All rights reserved.
//

/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use _in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions _in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer _in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


using System;
using System.Collections.Generic;
using System.Text;
using EffiProz.Core.Persist;

namespace EffiProz.Core.ScriptIO
{
    /**
     * Base class for all script readers.
     *
     * @author fredt@users
     * @version 1.7.2
     * @since 1.7.2
     */
    public abstract class ScriptReaderBase
    {       

        public const int ANY_STATEMENT = 1;
        public const int DELETE_STATEMENT = 2;
        public const int INSERT_STATEMENT = 3;
        public const int COMMIT_STATEMENT = 4;
        public const int SESSION_ID = 5;
        public const int SET_SCHEMA_STATEMENT = 6;
        protected Database database;
        protected int lineCount;
          
        public void readAll(Session session)
        {
            readDDL(session);
            readExistingData(session);
        }

        protected abstract void readDDL(Session session);


        protected abstract void readExistingData(Session session);


        public abstract bool readLoggedStatement(Session session);

        public ScriptReaderBase(Database db)
        {
            this.database = db;
        }

        public int statementType;
        public int sessionNumber;
        public Object[] rowData;
        public long sequenceValue;
        public string statement;
        public Table currentTable;
        public PersistentStore currentStore;
        public NumberSequence currentSequence;
        public string currentSchema;

        public int getStatementType()
        {
            return statementType;
        }

        public int getSessionNumber()
        {
            return sessionNumber;
        }

        public Object[] getData()
        {
            return rowData;
        }

        public string getLoggedStatement()
        {
            return statement;
        }

        public NumberSequence getCurrentSequence()
        {
            return currentSequence;
        }

        public long getSequenceValue()
        {
            return sequenceValue;
        }

        public Table getCurrentTable()
        {
            return currentTable;
        }

        public string getCurrentSchema()
        {
            return currentSchema;
        }

        public int getLineNumber()
        {
            return lineCount;
        }

        public abstract void close();
    }
}